Help requested on getting info on olives

G'day,
Am trying to find out lots of info on the international olive market to
see how feasable an olive farm would be. Can anyone suggest where
information to answer the following sorts of questions can be found?
- the sale price of the pressed oil on the world market? (for world read
SE Asia/NZ/Australia)
- what are the other olive growing regions, and what is their output in
terms of quantity and quality?
- what are the climatic and soil conditions for the other regions, and
what type of olive tree (ie species) is grown?
Please reply by email to alunz at iconz.co.nz
Thank you for your help.